When Raspberry Pi launched the original Pico in January 2021, it was well received as a powerful, low-cost ($4) microcontroller development board. Powered by Raspberry Pi’s own RP2040 system-on-chip (SoC) based on two Arm Cortex-M0+ cores running at 133MHz, it features 2MB of onboard flash storage, 264kB of RAM, and 40 pins—including three analogue inputs and the unique Programmable I/O subsystem.